Always mark the date. Here is what I’ve learned from marking dates:

Jogging shoes last 6 months.

Bathing suits, 3 years.

Eyeglasses, 6 years.

Stoves, 25 years.

Dishwashers, 18 years (a good dishwasher).

Refrigerators — a good one, 25 years. (Frigidaire brand, 10 years.)

Leather gloves from Sam’s Store, Ann Arbor, 2 years.

Battery for a Shark vacuum cleaner, 8 months.

Screw-in fluorescent bulbs. They do not last anywhere near the claimed 5-to-7 years. Try 2 years.

I had a Hardwick gas stove at a rental property for 36 years. The stove was made in Cleveland, Tennessee, in 1974, junked in Cleveland, Ohio, in 2010. The broiler door fell apart. The stove top still worked.

I have information on the “useful life” of condensate pumps, hot water tanks and boilers, too.